Head To Head: Apple iPhone 5 Vs. Samsung Galaxy S III

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Both phones have LTE, and both phones have all the GPS chips, gyros, accelerometers, spare cameras and compasses that you could ask for. As for extras, there are a few key differences between the two. Only the GSIII is expandable, and only the GSIII is available on T-Mobile, the nation's fourth-largest carrier (Apple and Samsung phones also are available on AT&T, Sprint and Verizon). What's more, only Samsung delivers NFC, making possible the scenario in this cheeky Galaxy S III ad.